Home / 143,154.20-214,904.10-142,117.40

Finding the Fourth Proportional to 143,154.20, 214,904.10 and 142,117.40

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Solution

The fourth proportional to 143,154.20, 214,904.10 and 142,117.40 is: 213,347.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,154.20 : 214,904.10 = 142,117.40 : x
  2. Step 2: Convert to fraction form
    143,154.20/214,904.10 = 142,117.40/x
  3. Step 3: Cross multiply
    143,154.20x = 214,904.10 × 142,117.40
  4. Step 4: Simplify right side
    143,154.20x = 30,541,611,941.34
  5. Step 5: Solve for x
    x = 30,541,611,941.34/143,154.20
  6. Step 6: Final answer
    x = 213,347.65

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.